Auckland gained 22 new suburbs where the median house price soared to more than a million dollars in December 2015.
Data produced in the QV Property Report shows Auckland is the only city in the North Island with suburbs where the median house price is more than a million dollars.
Seatoun in Wellington is close to breaking the million dollar threshold, with a median house price of $990,600, up 0.9 per cent in the last three months.
Auckland now has 62 million-dollar suburbs, including the $2 million suburb of Herne Bay.
Silverdale joined Omaha in the Rodney district million-dollar club, while Onetangi and Oneroa on Waiheke Island toppled a million dollar median house price in December 2015.
Pinehill on the North Shore, Kingsland in Auckland and Half Moon Bay in Manukau all had an increase in median price in December 2014 to December 2015 of over 20 per cent.
James Wilson, QV Homevalue registered valuer, said Half Moon Bay's increase in value of 20.7 per cent was in part to do with the transport link to Auckland by ferry and the schools in the area.
"Particular parts of [Half Moon Bay] have a really good school zone, Macleans College zoning," he said.
"Suburbs that are now in the million-dollar club they've all got a common theme. They're generally well established, they're well serviced, they've got good amenities, such as schooling and transport routes and transport hubs."
Manukau was the district with the most additions to the million-dollar suburb club. Ten of its 14 million-dollar suburbs were new additions in December 2015.
Wilson said Manukau had room to grow in value.
"Historically it was rather undervalued. There's quite a few pockets of new sub-divison developments ... Those pockets with new builds are really, really strong now... and hence why you're getting those areas now being pulled up in regards to value and tipping across that million-dollar mark."
North Shore has 21 suburbs where the average house price is above $1 million, but in 2015 only four suburbs joined the club.
"The North Shore as a rule has always been a very popular locality for the higher end, the owner-occupier market... it's had high value homes for a much longer time," Wilson said.
62 million-dollar suburbs in Auckland. New additions in December 2015 in bold.
Campbells Bay $1,637,900
Castor Bay $1,468,850
Fairview Heights $1,217,650
Forrest Hill $1,071,450
Mairangi Bay $1,312,200
Murrays Bay $1,329,400
Narrow Neck $1,388,550
Northcote Point $1,249,950
Rothesay Bay $1,212,250
Schnapper Rock $1,162,600
Stanley Point $1,728,450
Freemans Bay $1,238,700
Greyn Lynn $1,232,200
Herne Bay $2,157,000
Mission Bay $1,508,650
Mount Eden $1,284,800
Point Chevalier $1,272,650
Royal Oak $1,005,150
Saint Johns $1,047,150
Saint Marys Bay $1,973,700
St Heliers $1,479,000
Wai O Taki Bay $1,055,400
East Tamaki Heights
Eastern Beach $1,329,550
Farm Cove $1,194,600
Half Moon Bay
Mellons Bay $1,390,750
Source: Qv.co.nz E-Valuer estimate of median value at 31 January 2016.